*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fbfaf6;color:#1e2c3f;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{width:min(1180px,calc(100% - 32px));margin:auto}.skip{position:fixed;left:-9999px}.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:10px}.notice{background:#17324d;color:#dce8f2;font-size:13px;padding:6px 0}.site-header{background:rgba(255,255,255,.96);position:sticky;top:0;z-index:30;border-bottom:1px solid #e7e8e3}.nav-row{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px}.brand>span{display:grid;place-items:center;width:43px;height:43px;border-radius:14px;background:#f4b942;color:#17324d;font-weight:900;font-size:23px;box-shadow:inset 0 -3px 0 rgba(0,0,0,.08)}.brand strong,.brand small{display:block}.brand strong{font-size:20px}.brand small{font-size:11px;color:#6d7886}.main-nav{display:flex;align-items:center;gap:22px;font-size:15px;font-weight:700}.main-nav>a,.main-nav summary{padding:10px 0;cursor:pointer;list-style:none}.main-nav a:hover{color:#1f7a66}.main-nav details{position:relative}.category-menu{display:none;position:absolute;right:0;top:42px;width:360px;padding:14px;background:#fff;border:1px solid #dde3df;border-radius:16px;box-shadow:0 18px 50px rgba(31,45,61,.16);grid-template-columns:1fr 1fr;gap:6px}.main-nav details[open] .category-menu{display:grid}.category-menu a{padding:10px;border-radius:10px}.category-menu a:hover{background:#f1f6f3}.nav-toggle{display:none;border:0;background:#17324d;color:#fff;border-radius:10px;padding:9px 14px}.hero{overflow:hidden;background:linear-gradient(135deg,#eff7f0,#fff7dd 62%,#eef4ff);padding:78px 0 62px}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:70px}.pill{display:inline-flex;background:#fff;border:1px solid #d8e5dd;border-radius:999px;padding:7px 12px;color:#1f7a66;font-size:13px;font-weight:800}.hero h1{font-size:clamp(40px,5.2vw,70px);line-height:1.08;letter-spacing:-.04em;margin:20px 0;color:#17324d;max-width:760px}.hero p{font-size:18px;color:#596878;max-width:640px}.search-bar{display:flex;background:#fff;border:1px solid #dbe2df;border-radius:15px;padding:6px;box-shadow:0 12px 35px rgba(40,59,72,.1);max-width:650px;margin-top:28px}.search-bar input{flex:1;min-width:0;border:0;outline:0;padding:13px 14px;font-size:16px;background:transparent}.search-bar button,.print-toolbar button,.side-card button,.generator-controls button{border:0;background:#1f7a66;color:#fff;border-radius:10px;padding:12px 20px;font-weight:800;cursor:pointer}.quick-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.quick-links a{font-size:13px;background:rgba(255,255,255,.65);padding:6px 11px;border-radius:999px}.hero-board{position:relative;height:390px}.board-card{position:absolute;background:#fff;border-radius:20px;padding:26px;box-shadow:0 26px 70px rgba(44,63,78,.16);border:1px solid #e8e6dc;display:grid;gap:13px;font-size:18px}.card-a{width:280px;left:5%;top:35px;transform:rotate(-5deg)}.card-b{width:250px;right:4%;bottom:40px;transform:rotate(6deg)}.hero-board i{position:absolute;right:20%;top:2%;font-size:85px;color:#ec6f5e;transform:rotate(15deg)}.metrics{background:#17324d;color:#fff}.metrics>.wrap{display:grid;grid-template-columns:repeat(4,1fr)}.metrics div div{padding:22px;text-align:center;border-right:1px solid rgba(255,255,255,.12)}.metrics div div:last-child{border:0}.metrics strong,.metrics span{display:block}.metrics strong{font-size:25px;color:#f4b942}.metrics span{font-size:13px;color:#cdd9e4}.section{padding:76px 0}.soft{background:#f0f4ef}.section-title{display:flex;justify-content:space-between;margin-bottom:30px}.section-title span,.page-head>span{color:#1f7a66;font-weight:900;font-size:13px;letter-spacing:.08em}.section-title h2,.page-head h1{font-size:34px;line-height:1.2;margin:5px 0 8px;color:#17324d}.section-title p{margin:0;color:#6a7480}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.category-card{position:relative;display:flex;gap:16px;background:#fff;border:1px solid #e3e7e1;border-radius:18px;padding:22px;overflow:hidden;transition:.2s}.category-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--accent)}.category-card:hover{transform:translateY(-3px);box-shadow:0 16px 35px rgba(38,54,70,.1)}.category-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:15px;background:color-mix(in srgb,var(--accent) 14%,white);font-size:27px}.category-card h3{margin:0 0 6px}.category-card p{margin:0 0 8px;color:#66717d;font-size:14px}.category-card small{color:#8a9299}.content-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.content-card{background:#fff;border:1px solid #e0e5df;border-radius:18px;overflow:hidden;transition:.2s}.content-card:hover{transform:translateY(-3px);box-shadow:0 17px 38px rgba(35,51,63,.1)}.cover{position:relative;display:block;aspect-ratio:4/3;background:#eef1ec;overflow:hidden}.cover img{width:100%;height:100%;object-fit:cover;object-position:top}.cover>span{position:absolute;top:12px;right:12px;background:#17324d;color:#fff;border-radius:999px;padding:4px 9px;font-size:11px}.content-card>div{padding:18px}.content-card small{color:#1f7a66;font-weight:800}.content-card h3{font-size:18px;line-height:1.4;margin:8px 0}.content-card p{font-size:14px;color:#68737f;margin:0 0 12px}.content-card footer{display:flex;gap:6px;flex-wrap:wrap}.content-card footer span{font-size:11px;background:#f2f4f0;border-radius:999px;padding:4px 8px}.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.article-grid article{background:#fff;border:1px solid #e1e5df;border-radius:18px;padding:24px}.article-grid article>span{font-size:12px;color:#1f7a66;font-weight:900}.article-grid h3{margin:8px 0}.article-grid p{color:#65717d}.article-grid article>a{color:#1f7a66;font-weight:800}.breadcrumbs{display:flex;gap:8px;align-items:center;font-size:13px;color:#78828d;padding:22px 0}.category-hero{background:linear-gradient(120deg,color-mix(in srgb,var(--accent) 14%,white),#fff);border-block:1px solid #e7e9e4}.category-hero>.wrap{display:flex;align-items:center;gap:24px;padding-block:45px}.category-hero>.wrap>span{font-size:56px}.category-hero h1{font-size:42px;margin:0}.category-hero p{margin:8px 0 0;color:#5d6874}.list-summary{margin-bottom:22px;color:#66717d}.list-summary strong{font-size:26px;color:#17324d}.empty{text-align:center;padding:60px;background:#fff;border:1px dashed #cfd8d2;border-radius:16px;color:#71808c}.worksheet-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:start}.print-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;background:#fff;border:1px solid #e0e5df;padding:12px 14px;border-radius:14px}.print-toolbar span{font-size:13px;color:#1f7a66}.side-card{position:sticky;top:120px;background:#fff;border:1px solid #e0e5df;border-radius:18px;padding:24px}.side-card small{color:#1f7a66;font-weight:800}.side-card h1{font-size:28px;line-height:1.3}.side-card p{color:#65717d}.side-card dl{border-top:1px solid #e5e8e3}.side-card dl div{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid #e5e8e3}.side-card dt{color:#7b8590}.side-card dd{margin:0;font-weight:700}.side-card .wide{width:100%;margin-top:18px}.hint{font-size:12px;text-align:center}.worksheet-print{position:relative;width:100%;aspect-ratio:210/297;min-height:900px;background:#fff;border:1px solid #dce2de;box-shadow:0 14px 40px rgba(41,57,70,.1);padding:6.5%;overflow:hidden;color:#263645}.paper-top{display:flex;justify-content:space-between;border-bottom:2px solid #17324d;padding-bottom:10px;margin-bottom:5%}.paper-top strong{color:#17324d}.paper-top span{margin-left:10px;color:#6a7782}.student-fields{font-size:14px}.worksheet-print>h2{text-align:center;font-size:28px;margin:2% 0 1%}.paper-instruction{text-align:center;color:#66737e;margin:0 0 4%}.paper-footer{position:absolute;left:6.5%;right:6.5%;bottom:3%;display:flex;justify-content:space-between;border-top:1px solid #cfd8d2;padding-top:8px;font-size:12px;color:#7b8791}.math-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px 24px;padding:3% 2%}.math-grid>div{display:grid;grid-template-columns:1fr auto 1fr auto 32px;align-items:end;gap:8px;font-size:22px}.generator-sheet .math-grid>div{grid-template-columns:1fr auto 32px}.math-grid i{height:1.2em;border-bottom:1px solid #33485a}.word-bank{margin:3% 7%;padding:14px 18px;border:1px solid #c9d8e1;border-radius:10px;background:#f8fbfd;text-align:center;font-size:18px;letter-spacing:.08em}.sorting-boxes{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;padding:3% 7%}.sorting-boxes.three{grid-template-columns:repeat(3,1fr);gap:12px;padding-inline:3%}.sorting-boxes section{min-height:180px;border:2px solid #cbd9e2;border-radius:10px;padding:18px;text-align:center}.sorting-boxes h3{margin:0 0 32px;font-size:19px}.sorting-boxes p{font-size:17px;line-height:2.2;margin:0}.numbered-word-bank{display:grid;grid-template-columns:repeat(3,1fr);gap:10px 20px;margin:3% 6%;padding:18px;border:1px solid #cad8e1;border-radius:10px;font-size:17px;text-align:center}.shape-name-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:6% 7% 2%}.shape-name-grid>div{position:relative;display:grid;place-items:center;height:130px;border:1px solid #c9d7e0;border-radius:10px}.shape-name-grid b{position:absolute;left:9px;top:5px;font-size:14px}.shape-name-grid span{font-size:74px;line-height:1;font-family:Arial}.position-grid{width:min(420px,80%);margin:3% auto;display:grid;grid-template-columns:repeat(3,1fr);border:2px solid #8fa8b6}.position-grid span{display:grid;place-items:center;height:88px;border:1px solid #aebfca;font-size:24px;font-weight:700}.position-grid .center{background:#eaf4f8}.position-questions{font-size:17px;gap:9px 45px;padding-top:1%}.daily-order{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 42px;padding:5% 12%;font-size:21px}.daily-order p{margin:0;border-bottom:1px dashed #b9c9d3;padding:10px 4px}.fill-list,.choice-list,.answer-lines,.pattern-rows,.matching-grid{display:grid;gap:14px;padding:2% 6%}.fill-list{grid-template-columns:repeat(2,1fr);font-size:18px}.choice-list p{display:grid;grid-template-columns:30px 1fr auto;gap:10px;margin:0;border-bottom:1px dashed #ccd5dc;padding:8px}.answer-lines{grid-template-columns:repeat(2,1fr)}.answer-lines p{border-bottom:1px solid #aab8c2;padding-bottom:6px}.pattern-rows>div{display:flex;align-items:center;border:1px solid #c6d4dd;border-radius:9px;overflow:hidden}.pattern-rows span{flex:1;text-align:center;padding:15px 5px;border-right:1px solid #d6e1e8;font-size:22px}.pattern-rows span:last-child{border-right:0}.matching-grid{grid-template-columns:1fr 1fr;gap:38%;padding:3% 12%}.matching-grid>div{display:grid;gap:18px}.matching-grid span{border:1px solid #c8d6df;border-radius:7px;padding:8px 13px;text-align:center;font-size:17px}.number-cloud,.shape-board{display:grid;grid-template-columns:repeat(8,1fr);gap:8px;padding:3%;text-align:center}.number-cloud span,.shape-board span{padding:8px;border:1px solid #cbd7de;border-radius:8px}.focus-target,.center-note{text-align:center;font-weight:800}.prose{max-width:860px}.prose h2{font-size:28px;margin-top:1.8em;color:#17324d}.prose p,.prose li{color:#536371}.article-page{max-width:850px;padding-top:48px;padding-bottom:80px}.article-page h1{font-size:clamp(34px,5vw,54px);line-height:1.2}.lead{font-size:20px;color:#65727d}.article-meta{color:#8a939a;font-size:13px;margin:20px 0 34px}.page-head{text-align:center;max-width:760px;margin:0 auto 28px}.page-head p{color:#65727d}.generator-layout{display:grid;grid-template-columns:290px 1fr;gap:28px;align-items:start}.generator-controls{background:#fff;border:1px solid #dfe5df;border-radius:16px;padding:20px;display:grid;gap:14px;position:sticky;top:120px}.generator-controls label{display:grid;gap:6px;font-size:13px;font-weight:700}.generator-controls input,.generator-controls select{border:1px solid #cfd8d2;border-radius:9px;padding:10px;background:#fff}.generator-controls .check{display:flex;align-items:center}.generator-controls .secondary{background:#17324d}.answer-key{margin:20px;font-size:12px}.page-copy{margin:50px auto}.search-page{margin:0 auto 24px}.search-count{text-align:center;color:#66727e}.not-found{text-align:center;padding:110px 0}.not-found strong{font-size:100px;color:#f4b942}.not-found h1{font-size:36px}.not-found a{display:inline-block;background:#1f7a66;color:#fff;padding:12px 18px;border-radius:10px}.site-footer{background:#14293e;color:#d8e2ea;padding-top:56px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}.footer-grid h2{font-size:15px;color:#fff}.footer-grid section>a{display:block;color:#b9c8d3;margin:7px 0}.footer-grid p{color:#9eb0be}.footer-brand strong{color:#fff}.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:42px;padding:18px 0;font-size:12px;color:#91a3b2}@media(max-width:980px){.content-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.hero-grid{grid-template-columns:1fr}.hero-board{display:none}.worksheet-layout{grid-template-columns:1fr}.side-card{position:static}.generator-layout{grid-template-columns:1fr}.generator-controls{position:static;grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){.notice{display:none}.nav-row{height:66px}.nav-toggle{display:block}.main-nav{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid #dfe4df;border-radius:14px;padding:14px;box-shadow:0 18px 45px rgba(20,42,60,.15);align-items:stretch}.main-nav.open{display:grid}.main-nav details{display:none}.hero{padding:52px 0}.hero h1{font-size:43px}.metrics>.wrap{grid-template-columns:repeat(2,1fr)}.metrics div div:nth-child(2){border-right:0}.category-grid,.content-grid,.article-grid{grid-template-columns:1fr}.category-hero h1{font-size:32px}.worksheet-print{min-height:720px}.paper-top{font-size:12px}.student-fields{display:none}.math-grid{gap:12px;font-size:14px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid section:first-child{grid-column:1/3}.generator-controls{grid-template-columns:1fr}.sorting-boxes.three{grid-template-columns:1fr 1fr}.sorting-boxes.three section:last-child{grid-column:1/3}.shape-name-grid{gap:8px;padding-inline:2%}.shape-name-grid>div{height:90px}.shape-name-grid span{font-size:48px}}@media(max-width:480px){.search-bar{display:grid}.search-bar button{width:100%}.footer-grid{grid-template-columns:1fr}.footer-grid section:first-child{grid-column:auto}.worksheet-print{min-height:620px}.sorting-boxes,.sorting-boxes.three{grid-template-columns:1fr;padding-inline:2%}.sorting-boxes.three section:last-child{grid-column:auto}.shape-name-grid{grid-template-columns:repeat(2,1fr)}}@media print{body{background:#fff;margin:0!important}.site-header,.site-footer,.breadcrumbs,.print-toolbar,.worksheet-layout aside,.worksheet-copy,.soft,.generator-controls,.page-head,.skip,.page-copy{display:none!important}main{display:block!important;margin:0!important;padding:0!important}.worksheet-layout,.generator-layout{display:block!important;width:100%!important;max-width:none!important;margin:0!important;padding:0!important}.worksheet-layout>article{display:block!important;margin:0!important;padding:0!important}.section.wrap{width:100%!important;max-width:none!important;margin:0!important;padding:0!important}.worksheet-print{width:210mm!important;height:297mm!important;min-height:0!important;aspect-ratio:auto!important;border:0!important;box-shadow:none!important;margin:0!important;padding:12mm!important;overflow:hidden!important;page-break-before:avoid!important;page-break-after:avoid!important}.paper-footer{left:12mm!important;right:12mm!important;bottom:8mm!important}@page{size:A4 portrait;margin:0}}
/* V2: 儿童练习册生成器与稳定打印排版 */
.generator-head{max-width:900px}.generator-benefits{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:18px}.generator-benefits span{background:#edf7f3;border:1px solid #d2e8df;color:#1f6f5e;border-radius:999px;padding:6px 11px;font-size:13px;font-weight:700}.generator-page-section{padding-top:42px}.generator-layout{grid-template-columns:300px minmax(0,1fr);gap:30px}.generator-controls{top:104px}.control-heading{display:flex;justify-content:space-between;align-items:end;border-bottom:1px solid #e5e9e6;padding-bottom:12px}.control-heading small{color:#7b8790}.generate-button{font-size:15px}.control-tip{font-size:12px;color:#7d8992;margin:0;text-align:center}.worksheet-stage{min-width:0}.generator-toolbar{margin-top:0}.generator-sheet{max-width:850px;margin-inline:auto}.generator-sheet .paper-top{margin-bottom:3.5%}.generator-sheet>h2{margin-top:1.5%;font-size:30px}.generator-sheet .paper-instruction{margin-bottom:2.5%}
.calculation-grid{display:grid;grid-template-columns:repeat(var(--question-columns,3),minmax(0,1fr));column-gap:28px;row-gap:20px;padding:3% 1.5% 2%}.calculation-question{min-width:0;display:grid;grid-template-columns:24px minmax(0,1fr) 18px 54px;align-items:end;gap:5px;font-size:22px;line-height:1.2;white-space:nowrap;font-variant-numeric:tabular-nums}.calculation-question small{font-size:11px;color:#9aa4ab;align-self:center}.calculation-expression{text-align:right;min-width:0}.calculation-question b{text-align:center;font-weight:700}.answer-line{height:1.25em;border-bottom:1.5px solid #33485a}.generator-sheet[data-columns="4"] .calculation-grid{column-gap:15px}.generator-sheet[data-columns="4"] .calculation-question{grid-template-columns:20px minmax(0,1fr) 14px 42px;font-size:18px;gap:3px}.generator-sheet[data-count="30"] .calculation-grid,.generator-sheet[data-count="32"] .calculation-grid{row-gap:16px}.answer-key{position:absolute;left:6.5%;right:6.5%;bottom:6.5%;margin:0;padding:10px 12px;border:1px solid #d6dfda;border-radius:8px;background:#f8faf9;font-size:11px;line-height:1.5}.answer-key strong{display:block;margin-bottom:4px}.answer-key>div{display:grid;grid-template-columns:repeat(8,1fr);gap:2px 8px}.answer-key span{white-space:nowrap}.generator-copy{max-width:900px}.generator-copy h2{border-top:1px solid #e1e7e2;padding-top:30px}.generator-copy h2:first-child{border-top:0;padding-top:0}.generator-copy h3{color:#24465d;margin-top:26px}.generator-copy table{width:100%;border-collapse:collapse;margin:20px 0}.generator-copy th,.generator-copy td{border:1px solid #dce3df;padding:10px;text-align:left}.generator-copy th{background:#f3f7f4}.generator-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.generator-card{display:block;background:#fff;border:1px solid #dfe5df;border-radius:17px;padding:22px;transition:.2s}.generator-card:hover{transform:translateY(-3px);box-shadow:0 14px 35px rgba(30,55,68,.1)}.generator-card>span{color:#1f7a66;font-weight:800;font-size:12px}.generator-card h3{font-size:20px;margin:8px 0;color:#17324d}.generator-card p{color:#66747f;font-size:14px;min-height:46px}.generator-card b{color:#1f7a66;font-size:13px}
/* 修正原有静态口算练习的列宽和答案线 */
.worksheet-print .math-grid{grid-template-columns:repeat(3,minmax(0,1fr));column-gap:26px;row-gap:20px;padding:3% 1%}.worksheet-print .math-grid>div{min-width:0;grid-template-columns:minmax(22px,auto) 14px minmax(22px,auto) 18px 48px!important;justify-content:center;align-items:end;gap:5px;font-size:21px;white-space:nowrap;font-variant-numeric:tabular-nums}.worksheet-print .math-grid>div span{text-align:center}.worksheet-print .math-grid>div i{width:48px;height:1.25em;border-bottom:1.5px solid #33485a}
.article-related{border-top:1px solid #e5e9e5;margin-top:55px;padding-top:35px}.article-related h2{font-size:24px}.article-related ul{padding-left:20px}.article-related li{margin:8px 0}.article-related a{color:#1f7a66;font-weight:700}
@media(max-width:1100px){.generator-layout{grid-template-columns:270px minmax(0,1fr)}.calculation-grid{column-gap:18px}.generator-card-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:980px){.generator-layout{grid-template-columns:1fr}.generator-controls{position:static;grid-template-columns:repeat(2,1fr)}.generator-controls .control-heading,.generator-controls .control-tip,.generator-controls button{grid-column:1/-1}.generator-sheet{max-width:850px}}
@media(max-width:760px){.generator-controls{grid-template-columns:1fr}.generator-card-grid{grid-template-columns:1fr}.generator-benefits{justify-content:flex-start}.calculation-grid{column-gap:8px;row-gap:12px}.calculation-question{grid-template-columns:18px minmax(0,1fr) 12px 34px;font-size:15px;gap:2px}.generator-sheet[data-columns="4"] .calculation-question{grid-template-columns:14px minmax(0,1fr) 10px 26px;font-size:12px}.answer-key>div{grid-template-columns:repeat(4,1fr)}.worksheet-print .math-grid{column-gap:10px;row-gap:12px}.worksheet-print .math-grid>div{grid-template-columns:minmax(18px,auto) 10px minmax(18px,auto) 12px 30px!important;font-size:15px;gap:2px}.worksheet-print .math-grid>div i{width:30px}}
@media print{.generator-sheet{max-width:none!important}.calculation-grid{column-gap:8mm!important;row-gap:5.5mm!important;padding:5mm 2mm 2mm!important}.calculation-question{grid-template-columns:7mm minmax(0,1fr) 5mm 14mm!important;gap:1.5mm!important;font-size:16pt!important}.generator-sheet[data-columns="4"] .calculation-grid{column-gap:4mm!important}.generator-sheet[data-columns="4"] .calculation-question{grid-template-columns:5mm minmax(0,1fr) 4mm 10mm!important;font-size:13pt!important}.generator-sheet[data-count="30"] .calculation-grid,.generator-sheet[data-count="32"] .calculation-grid{row-gap:4.2mm!important}.answer-key{left:12mm!important;right:12mm!important;bottom:16mm!important}.worksheet-print .math-grid{column-gap:7mm!important;row-gap:5.5mm!important;padding:5mm 1mm!important}.worksheet-print .math-grid>div{grid-template-columns:minmax(7mm,auto) 4mm minmax(7mm,auto) 5mm 13mm!important;gap:1.5mm!important;font-size:16pt!important}.worksheet-print .math-grid>div i{width:13mm!important}}
/* V3: 数独、找小牛与多类型学习生成器 */
.generator-controls .muted-button{background:#eef2ef;color:#355066;border:1px solid #d5ded8}.generator-controls .full-control{grid-column:1/-1}.generator-content{min-height:0}.generator-error{margin:40px auto;padding:22px;border:1px dashed #d8897d;border-radius:12px;color:#a33e32;text-align:center}.generator-feedback{position:absolute;left:6.5%;right:6.5%;bottom:6.6%;margin:0;padding:8px 12px;border-radius:8px;text-align:center;font-size:13px;font-weight:700;background:#edf3f7;color:#35576d}.generator-feedback.success{background:#e9f7ef;color:#197344}.generator-feedback.error{background:#fff0ee;color:#a43d31}.generator-feedback.info{background:#edf3f7;color:#35576d}.answer-key>div{grid-template-columns:repeat(var(--answer-columns,8),minmax(0,1fr))}.no-print{display:block}
/* 数独 */
.sudoku-list{display:grid;gap:22px;justify-items:center;padding:1% 2% 2%}.sudoku-list-2{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}.sudoku-list-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.sudoku-puzzle{width:min(100%,560px)}.sudoku-puzzle h3{text-align:center;margin:0 0 8px;font-size:15px;color:#536777}.sudoku-grid{display:grid;grid-template-columns:repeat(var(--sudoku-size),1fr);width:min(100%,560px);aspect-ratio:1;border:2px solid #1f3547;background:#fff}.sudoku-cell{display:grid;place-items:center;min-width:0;border-top:1px solid #9eacb6;border-left:1px solid #9eacb6;font-size:clamp(17px,2.4vw,30px);font-weight:700;color:#253b4d;background:#fff}.sudoku-cell.thick-top{border-top:3px solid #1f3547}.sudoku-cell.thick-left{border-left:3px solid #1f3547}.sudoku-cell.thick-right{border-right:3px solid #1f3547}.sudoku-cell.thick-bottom{border-bottom:3px solid #1f3547}.sudoku-cell.given{background:#f2f6f4}.sudoku-cell.revealed{color:#1f7a66;background:#fff9e7}.sudoku-cell.editable input{width:100%;height:100%;border:0;outline:0;text-align:center;background:transparent;font:inherit;color:#1f7a66}.sudoku-cell.editable:focus-within{background:#fff8d6;box-shadow:inset 0 0 0 2px #f4b942}.sudoku-cell.wrong{background:#ffe8e5}.sudoku-list-4 .sudoku-cell{font-size:17px}.sudoku-list-4 .sudoku-puzzle h3{font-size:12px;margin-bottom:4px}
/* 找小牛逻辑题 */
.cow-puzzle-wrap{display:grid;justify-items:center;gap:12px;padding:0 2% 2%}.cow-rules{width:100%;display:grid;grid-template-columns:repeat(3,1fr);border:1px solid #e1c35e;border-radius:16px;overflow:hidden;background:#fffaf0;box-shadow:0 8px 24px rgba(212,174,57,.12)}.cow-rules span{padding:10px 8px;text-align:center;font-size:13px;font-weight:700;border-right:1px solid #eadfb7}.cow-rules span:last-child{border:0}.cow-count{font-size:13px;color:#667580;background:#f4f7f5;border-radius:999px;padding:5px 13px}.cow-grid{display:grid;grid-template-columns:repeat(var(--cow-size),1fr);width:min(78%,600px);aspect-ratio:1;background:#e9eeeb;padding:10px;border-radius:12px}.cow-cell{position:relative;display:grid;place-items:center;border:1px solid rgba(255,255,255,.6);background:var(--region-color);padding:0;min-width:0;cursor:pointer;color:#fff;font-size:clamp(18px,3.3vw,40px);line-height:1}.cow-cell span{filter:drop-shadow(0 1px 1px rgba(0,0,0,.18))}.cow-cell.region-top{border-top:4px solid #fff}.cow-cell.region-left{border-left:4px solid #fff}.cow-cell.region-right{border-right:4px solid #fff}.cow-cell.region-bottom{border-bottom:4px solid #fff}.cow-cell.cross span{font-size:1.2em;font-weight:900}.cow-cell.fixed{cursor:default}.cow-help{margin:0;color:#7a8790;font-size:12px}
/* 数列规律 */
.sequence-list{display:grid;gap:14px;padding:2% 1%}.sequence-question{display:grid;grid-template-columns:28px 1fr;align-items:center}.sequence-question>small{color:#89959e}.sequence-question>div{display:flex;align-items:center;justify-content:space-between;gap:7px}.sequence-box{display:grid;place-items:center;min-width:48px;height:43px;border:1px solid #9eb0bc;border-radius:8px;background:#f9fbfa;font-weight:800;font-size:18px}.sequence-box.blank{background:#fff;border:2px solid #526d7f}.sequence-question b{color:#9aa6ae;font-size:14px}
/* 竖式 */
.vertical-grid{display:grid;grid-template-columns:repeat(var(--vertical-columns,3),minmax(0,1fr));gap:22px 30px;padding:2%}.vertical-question{display:grid;grid-template-columns:22px 1fr;align-items:start}.vertical-question>small{color:#8f9aa3}.vertical-math{width:86px;margin:auto;text-align:right;font-variant-numeric:tabular-nums;font-size:22px;line-height:1.15}.vertical-math>span{display:block;padding-right:4px}.vertical-math>span:nth-child(2){display:flex;justify-content:space-between}.vertical-math>span b{font-weight:500}.vertical-math>i{display:block;border-top:2px solid #283e50;margin-top:3px;height:28px}.vertical-math>strong{display:block;min-height:25px;color:#1f7a66}
/* 九九乘法 */
.multiplication-question-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px 26px;padding:3% 2%}.multiplication-question-grid>div{display:grid;grid-template-columns:24px 1fr;align-items:center;white-space:nowrap;font-size:20px}.multiplication-question-grid small{color:#919ca4;font-size:11px}.multiplication-table-wrap{display:grid;place-items:center;padding:1%}.multiplication-table{display:grid;grid-template-columns:repeat(10,1fr);width:min(94%,650px);aspect-ratio:1;border:2px solid #294255}.multiplication-table>*{display:grid;place-items:center;border-right:1px solid #a8b4bc;border-bottom:1px solid #a8b4bc;font-style:normal;font-size:15px}.multiplication-table b,.multiplication-table .corner{background:#eaf1ed;color:#17324d}.multiplication-table i{min-width:0}
/* 汉字田字格 / 米字格 */
.hanzi-practice,.pinyin-practice{display:grid;gap:10px;padding:0 1%}.hanzi-row,.pinyin-row{display:grid;grid-template-columns:48px 1fr;gap:10px;align-items:center}.hanzi-row>strong,.pinyin-row>strong{font-size:24px;text-align:center;color:#1f7a66}.hanzi-cells,.pinyin-cells{display:grid;grid-template-columns:repeat(8,1fr);gap:6px}.hanzi-cells:has(.hanzi-cell:nth-child(6):last-child){grid-template-columns:repeat(6,1fr)}.hanzi-cells:has(.hanzi-cell:nth-child(4):last-child){grid-template-columns:repeat(4,1fr)}.hanzi-cell{position:relative;display:grid;place-items:center;aspect-ratio:1;border:1.5px solid #bf6f6f;font-size:clamp(22px,3vw,37px);color:#c5a1a1;overflow:hidden}.hanzi-cell:before,.hanzi-cell:after{content:"";position:absolute;pointer-events:none}.hanzi-cell:before{left:0;right:0;top:50%;border-top:1px dashed #e0bebe}.hanzi-cell:after{top:0;bottom:0;left:50%;border-left:1px dashed #e0bebe}.hanzi-mi .hanzi-cell{background-image:linear-gradient(45deg,transparent 49.4%,#ead0d0 49.5%,#ead0d0 50.5%,transparent 50.6%),linear-gradient(-45deg,transparent 49.4%,#ead0d0 49.5%,#ead0d0 50.5%,transparent 50.6%)}.hanzi-cell.trace{color:#aeb3b6}
/* 拼音四线三格 */
.pinyin-row{grid-template-columns:68px 1fr}.pinyin-row>strong{font-size:20px}.pinyin-cells{grid-template-columns:repeat(8,1fr)}.pinyin-cells:has(.pinyin-cell:nth-child(6):last-child){grid-template-columns:repeat(6,1fr)}.pinyin-cells:has(.pinyin-cell:nth-child(4):last-child){grid-template-columns:repeat(4,1fr)}.pinyin-cell{position:relative;display:grid;place-items:center;height:55px;border-left:1px solid #b8c3ca;border-right:1px solid #b8c3ca;font-family:"Times New Roman",serif;font-size:24px;font-style:italic;color:#aeb4b8;background:repeating-linear-gradient(to bottom,#9eacb5 0,#9eacb5 1px,transparent 1px,transparent 18px)}
/* 数字排序 */
.number-sort-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 22px;padding:1%}.number-sort-question{display:grid;grid-template-columns:24px 1fr;border:1px solid #dbe3de;border-radius:10px;padding:10px}.number-sort-question small{color:#8c98a1}.number-sort-question p{margin:5px 0;font-size:18px;white-space:nowrap}.number-sort-question p b{display:inline-block;min-width:28px;text-align:center}.number-sort-question i{display:block;min-height:25px;border-bottom:1px solid #52697a;font-style:normal;color:#1f7a66;font-size:14px}.sort-direction{font-size:12px;color:#6b7984}
/* 数字金字塔 */
.pyramid-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;padding:0 1%}.pyramid-question{border:1px solid #dde4df;border-radius:10px;padding:8px;text-align:center}.pyramid-question>small{color:#71808a}.number-pyramid{display:grid;gap:3px;margin-top:6px}.number-pyramid>div{display:flex;justify-content:center;gap:3px}.number-pyramid span{display:grid;place-items:center;width:42px;height:36px;border:1.5px solid #637b8b;background:#fff;font-weight:800}
@media(max-width:760px){.cow-rules{grid-template-columns:1fr}.cow-rules span{border-right:0;border-bottom:1px solid #eadfb7}.cow-grid{width:94%;padding:6px}.sequence-box{min-width:31px;height:34px;font-size:14px}.sequence-question>div{gap:3px}.vertical-grid{gap:12px}.vertical-math{width:65px;font-size:17px}.multiplication-question-grid{grid-template-columns:repeat(2,1fr);gap:12px}.hanzi-row,.pinyin-row{grid-template-columns:32px 1fr}.hanzi-row>strong,.pinyin-row>strong{font-size:16px}.hanzi-cells,.pinyin-cells{gap:2px}.pinyin-cell{height:38px}.number-sort-list,.pyramid-list{grid-template-columns:1fr}.sudoku-list-2,.sudoku-list-4{grid-template-columns:1fr}.sudoku-list-4 .sudoku-cell{font-size:14px}}
@media print{
.no-print,.generator-feedback{display:none!important}.generator-sheet>h2{font-size:20pt!important;margin:2mm 0 1mm!important}.generator-sheet .paper-instruction{font-size:10pt!important;margin-bottom:3mm!important}.generator-sheet .paper-top{margin-bottom:3mm!important}.generator-content{max-height:230mm;overflow:hidden}
.sudoku-list{gap:5mm!important;padding:0!important}.sudoku-list-2,.sudoku-list-4{grid-template-columns:repeat(2,1fr)!important}.sudoku-list-4{gap:3mm!important}.sudoku-list-4 .sudoku-puzzle{width:72mm!important}.sudoku-list-2 .sudoku-puzzle{width:82mm!important}.sudoku-list-1 .sudoku-puzzle{width:145mm!important}.sudoku-cell{font-size:14pt!important}.sudoku-list-4 .sudoku-cell{font-size:9pt!important}
.cow-rules span{padding:2.5mm 1mm!important;font-size:8.5pt!important}.cow-count{font-size:8pt!important;padding:1mm 3mm!important}.cow-grid{width:150mm!important;padding:2mm!important}.cow-cell{font-size:18pt!important}.cow-cell.region-top{border-top-width:2.2mm!important}.cow-cell.region-left{border-left-width:2.2mm!important}.cow-cell.region-right{border-right-width:2.2mm!important}.cow-cell.region-bottom{border-bottom-width:2.2mm!important}
.sequence-list{gap:3mm!important;padding:1mm 0!important}.sequence-box{min-width:15mm!important;height:11mm!important;font-size:12pt!important}.sequence-question{grid-template-columns:7mm 1fr!important}
.vertical-grid{gap:5mm 7mm!important;padding:2mm!important}.vertical-math{width:25mm!important;font-size:15pt!important}.vertical-math>i{height:8mm!important}
.multiplication-question-grid{gap:4.2mm 7mm!important;padding:3mm 1mm!important}.multiplication-question-grid>div{font-size:14pt!important}.multiplication-table{width:145mm!important}.multiplication-table>*{font-size:10pt!important}
.hanzi-practice,.pinyin-practice{gap:2.4mm!important;padding:0!important}.hanzi-row{grid-template-columns:12mm 1fr!important;gap:2mm!important}.hanzi-row>strong{font-size:14pt!important}.hanzi-cells{gap:1.4mm!important}.hanzi-cell{font-size:18pt!important}.pinyin-row{grid-template-columns:18mm 1fr!important;gap:2mm!important}.pinyin-row>strong{font-size:12pt!important}.pinyin-cells{gap:1mm!important}.pinyin-cell{height:13mm!important;font-size:16pt!important}
.number-sort-list{gap:3mm 5mm!important;padding:1mm!important}.number-sort-question{padding:2mm!important}.number-sort-question p{font-size:12pt!important;margin:1mm 0!important}.number-sort-question i{min-height:6mm!important}
.pyramid-list{gap:3mm!important;padding:0!important}.pyramid-question{padding:2mm!important}.number-pyramid span{width:12mm!important;height:10mm!important;font-size:11pt!important}
}
@media print{.pyramid-list{gap:2mm!important}.pyramid-question{padding:1mm!important}.number-pyramid{gap:1px!important}.number-pyramid span{width:10.5mm!important;height:8.5mm!important;font-size:10pt!important}}